A condenser having a capacity of 2 μF is charged to 200 V and then the plates of the capacitor are connected to a resistance wire.The heat produced is 

 A steady current of 1.5 A flows through a copper voltameter for 10 min. If the electrochemical equivalent of copper is 30 ×10^-5g C^-1,the mass of copper deposited on the electrode will be :

A 5⁰C rise in temperature is observed in a conductor by passing a current. When the current is doubled the rise in temperature will be approximately :

 Direct current is passed through a copper sulphate solution using platinum electrodes.The elements liberated at the electrodes are :

An electirc kettle boils 1 kg of water in time t₁ and another kettle boils the same amount of water in time t₂.  When they are joined in series, the time required to boil 1 kg of water is

Four bulbs marked 40 W, 250 V are connected in series with 250 V mains, the total power consumed is

At neutral temperature, the thermoelectric power is

 Faraday's laws are consequence of conservation of :

A 100 W-200 V bulb is connected to a 160 V power supply. The power consumption would be

Kirchhoff's current law at a junction deals with conservation of